package com.mcj.tokendemo.config;

import com.mcj.tokendemo.filter.JwtAuthenticationTokenFilter;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.config.annotation.method.configuration.EnableGlobalMethodSecurity;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
import org.springframework.security.config.http.SessionCreationPolicy;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.crypto.password.PasswordEncoder;
import org.springframework.security.web.AuthenticationEntryPoint;
import org.springframework.security.web.access.AccessDeniedHandler;
import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;

@Configuration
@EnableGlobalMethodSecurity(prePostEnabled = true)
public class SecurityConfig extends WebSecurityConfigurerAdapter {
	
	@Bean
	public PasswordEncoder passwordEncoder(){
		return new BCryptPasswordEncoder();
	}
	
	@Autowired
	private JwtAuthenticationTokenFilter jwtAuthenticationTokenFilter;
	
	@Autowired
	private AuthenticationEntryPoint authenticationEntryPoint;
	
	@Autowired
	private AccessDeniedHandler accessDeniedHandler;
	
	@Override
	protected void configure(HttpSecurity http) throws Exception {
//		http
//				//关闭csrf
//				.csrf().disable()
//				//不通过Session获取SecurityContext
//				.sessionManagement().sessionCreationPolicy(SessionCreationPolicy.STATELESS)
//				.and()
//				.authorizeRequests()
//				// 对于登录接口 允许匿名访问
//				.antMatchers("/user/login").anonymous()
//				// 除上面外的所有请求全部需要鉴权认证
//				.anyRequest().authenticated();
		
		http
				.csrf().disable()
				.sessionManagement().sessionCreationPolicy(SessionCreationPolicy.STATELESS)
				.and()
				.authorizeRequests()
				.antMatchers("/hello").permitAll()				// 登录 未登录状态都可以访问
				.antMatchers("/user/login").anonymous()			// 未登录状态可以访问
				.antMatchers("/testCors").hasAuthority("system:dept:list")		// 需要权限才能访问
				.anyRequest().authenticated();
		
		// 添加过滤器
		http.addFilterBefore(jwtAuthenticationTokenFilter, UsernamePasswordAuthenticationFilter.class);
		
		// 配置异常处理器
		http.exceptionHandling()
				// 认证失败处理器
				.authenticationEntryPoint(authenticationEntryPoint)
				// 授权失败处理器
				.accessDeniedHandler(accessDeniedHandler);
		
		// security 允许跨域处理
		http.cors();
	}
	
	@Bean
	@Override
	public AuthenticationManager authenticationManagerBean() throws Exception {
		return super.authenticationManagerBean();
	}
	
}
